Induction of tetraploid DNA content by simian virus 40 is dependent on T-antigen function in the G2 phase of the cell cycle.

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RESUMO

Previous experiments with the simian virus 40 mutant tsA357R-K (tsA30) demonstrated a T-antigen function that is required for production of cells with a greater-than-G2-phase DNA content. In this study, temperature shift experiments indicated that the temperature-sensitive function of tsA357R-K, which is necessary for entry into the greater-than-G2 phase, is not required in G1 or S but must be supplied in the G2 phase.

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